> In the US, an apology is considered an admission of responsibility and is often the starting point of legal action against the culprit

source? this is a popular theory among non-lawyers, but not, as far as I can tell, well-supported by the evidence. http://jaapl.org/content/early/2021/05/19/JAAPL.200107-20 has extensive citations including for their claim that "In theory, telling a patient about an error may make patients more likely to pursue litigation. In practice, however, bad outcomes alone are typically not reason enough for patients or their families to file malpractice claims."